prowler/ui/docs/code-review

Code Review System Documentation

Complete documentation for the Claude Code-powered pre-commit validation system.

Quick Navigation

Want to get started in 3 steps? → Read: CODE_REVIEW_QUICK_START.md

Want complete technical details? → Read: CODE_REVIEW_SETUP.md

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What This System Does

Automatically validates code against AGENTS.md standards when you commit using Claude Code.

git commit
  ↓
(Optional) Claude Code validation
  ↓
If violations found → Commit is BLOCKED ❌
If code complies → Commit continues ✅

Key Feature: Configurable with a single variable in .env

• CODE_REVIEW_ENABLED=true → Validates (recommended before commits)
• CODE_REVIEW_ENABLED=false → Skip validation (default, for iteration)

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File Guide

File	Purpose	Read Time
CODE_REVIEW_QUICK_START.md	3-step setup & examples	5 min
CODE_REVIEW_SETUP.md	Complete technical guide	15 min

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What Gets Validated

When validation is enabled, the system checks:

✅ React Imports

• Must use: import { useState } from "react"
• Not: import * as React or import React, {

✅ TypeScript Types

• Must use: const STATUS = {...} as const; type Status = typeof STATUS[...]
• Not: type Status = "a" | "b"

✅ Tailwind CSS

• Must use: className="bg-card-bg text-white"
• Not: className="bg-[var(...)]" or className="text-[#fff]"

✅ cn() Utility

• Must use for: cn("h-3", isActive && "bg-blue")
• Not for: cn("static-class")

✅ React 19 Hooks

• No: useMemo() / useCallback() without documented reason
• Use: Nothing (React Compiler handles optimization)

✅ Zod v4 Syntax

• Must use: z.email(), .min(1)
• Not: z.string().email(), .nonempty()

✅ File Organization

• 1 feature uses → Keep local in feature folder
• 2+ features use → Move to shared/global

✅ Directives

• Server Actions must have: "use server"
• Client Components must have: "use client"

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Installation (For Your Team)

Step 1: Decide if you want validation

• Optional: Each developer decides
• Team policy: Consider making it standard before commits

Step 2: Enable in your environment

# Edit ui/.env
CODE_REVIEW_ENABLED=true

Step 3: Done!

Your next git commit will validate automatically.

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Support

Question	Answer
How do I enable it?	Change CODE_REVIEW_ENABLED=true in .env
How do I disable it?	Change CODE_REVIEW_ENABLED=false in .env
How do I bypass?	Use git commit --no-verify (emergency only)
What if Claude Code isn't found?	Check PATH: which claude
What if hook doesn't run?	Check executable: chmod +x .husky/pre-commit
How do I test it?	Enable validation and commit code with violations to test
What if I don't have Claude Code?	Validation is skipped gracefully

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Key Features

✅ No Setup Required

• Uses Claude Code already in your PATH
• No API keys needed
• Works offline (if Claude Code supports it)

✅ Smart Validation

• Only checks files being committed
• Not the entire codebase
• Fast: ~10-30 seconds with validation enabled

✅ Flexible

• Can be enabled/disabled per developer
• Can be disabled temporarily with git commit --no-verify
• Default is disabled (doesn't interrupt workflow)

✅ Clear Feedback

• Shows exactly what violates standards
• Shows file:line references
• Explains how to fix each issue

✅ Well Documented

• 5 different documentation files
• For different needs and levels
• Examples and troubleshooting included

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Architecture

┌─────────────────────────────────────────┐
│  Developer commits code                 │
└────────────────┬────────────────────────┘
                 ↓
        ┌─────────────────┐
        │ Pre-Commit Hook │
        │ (.husky/pre-commit)
        └────────┬────────┘
                 ↓
        Read CODE_REVIEW_ENABLED from .env
                 ↓
        ┌──────────────────────────┐
        │ If false (disabled)      │
        └────────┬─────────────────┘
                 ↓
            exit 0 (OK)
                 ↓
            Commit continues ✅

        ┌──────────────────────────┐
        │ If true (enabled)        │
        └────────┬─────────────────┘
                 ↓
        Extract staged files
        (git diff --cached)
                 ↓
        Build prompt with git diff
                 ↓
        Send to: claude < prompt
                 ↓
        Analyze against AGENTS.md
                 ↓
        Return: STATUS: PASSED or FAILED
                 ↓
        Parse with: grep "^STATUS:"
                 ↓
        ┌──────────────────┐
        │ PASSED detected  │
        └────────┬─────────┘
                 ↓
            exit 0 (OK)
                 ↓
            Commit continues ✅

        ┌──────────────────┐
        │ FAILED detected  │
        └────────┬─────────┘
                 ↓
        Show violations
                 ↓
            exit 1 (FAIL)
                 ↓
        Commit is BLOCKED ❌
                 ↓
        Developer fixes code
        Developer commits again

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Getting Started

1. Read: CODE_REVIEW_QUICK_START.md (5 minutes)
2. Enable: Set CODE_REVIEW_ENABLED=true in your ui/.env
3. Test: Commit some code and see validation in action
4. For help: See the troubleshooting section in CODE_REVIEW_SETUP.md

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Implementation Details

• Files Modified: 1 (.husky/pre-commit)
• Files Created: 3 (documentation)
• Hook Size: ~120 lines of bash
• Dependencies: Claude Code CLI (already available)
• Setup Time: 1 minute
• Default: Disabled (no workflow interruption)

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Questions?

• How to enable? → CODE_REVIEW_QUICK_START.md
• How does it work? → CODE_REVIEW_SETUP.md
• Troubleshooting? → See troubleshooting section in CODE_REVIEW_SETUP.md

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Status

✅ Ready to Use

The system is fully implemented, documented, and tested. You can enable it immediately with a single variable change.

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Last Updated: November 6, 2024 Status: Complete Implementation